How To Make List View Items Align Left And Right Programmatically In Android

I am working on a chat app and on chat view I have to show message left and right. But as I am pretty new in Android programming, I am not being able to achieve this. Here is what

Solution 1:

You should set your layout_gravity to left or right, instead of the gravity.

I'm copying the concept from How to set layout_gravity programmatically?

Example (warning, code is not tested):

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);


    if(hashMap.get("is_mine").equals("yes")) {
        layout.setBackgroundResource(R.drawable.bg_msg1);
        params.gravity = Gravity.RIGHT;
        parent_layout.setParams(params);
    } else {
        layout.setBackgroundResource(R.drawable.bg_msg2);
        params.gravity = Gravity.LEFT;
        parent_layout.setParams(params);
        parent_layout.setGravity(Gravity.LEFT);
    }

Alternatively, you make 2 different XMLs and assign layout_gravity inside the xml itself, and inflate appropriate layout for each row.

Solution 2:

Use two different textview left and right for is_mine if is_mine is yes set visbility GONE for the other one and set your text on that textview and vice versa.

Solution 3:

Instead of using listview try using dynamic textview : create new Linear layout like

    Lineqarlayout ll =newLinear Layout();
     LayoutParams lparams = new LayoutParams(
    LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
      TextView tvIncoming=new TextView(this);
     tvIncoming.setLayoutParams(lparams);
     tvIncoming.setGravity(GRAVITY.RIGHT);
     tvIncoming.setText("test");
    this.ll.addView(tv);
  //similarly tvOutgoing with gravity leftif(hashMap.get("is_mine").equals("yes")) {
        tvOutgoing.setBackgroundResource(R.drawable.bg_msg1);
       holder.txtMsg.setText(hashMap.get("message"));
      } else {
        tvincogoing.setBackgroundResource(R.drawable.bg_msg1);
       holder.txtMsg.setText(hashMap.get("message"));
      }

Let me know if it helps::) Edit: Use this code(or pseudocode ) in your activity and not in adapter

Solution 4:

In your Layout folder, you should create 2 different xml files: rightchatbubble.xml and leftchatbubble.xml with android:layout_gravity="right" and android:layout_gravity="left" respectively.

In your Adapter you should change the following:

if(hashMap.get("is_mine").equals("yes")) {
                layout.setBackgroundResource(R.drawable.bg_msg1);
                parent_layout.setGravity(Gravity.RIGHT);
            } else {
                layout.setBackgroundResource(R.drawable.bg_msg2);
                parent_layout.setGravity(Gravity.LEFT);
            }

with:

if (hashMap.get("is_mine").equals("yes")) {
                    convertView = LayoutInflater.from(getContext()).inflate(R.layout.leftchatbubble, parent, false);
                }
                else {
                    convertView = LayoutInflater.from(getContext()).inflate(R.layout.rightchatbubble, parent, false);
                }

and it should work fine. Obviously, in the main remember to update

YOURadapter.notifyDataSetChanged();